WO2022007732A1

WO2022007732A1 - High-frequency tool having multiple functions

Info

Publication number: WO2022007732A1
Application number: PCT/CN2021/104420
Authority: WO
Inventors: 雷达; 高嵩; 韩贯通; 钱畅
Original assignee: 安瑞医疗器械(杭州)有限公司
Priority date: 2020-07-08
Filing date: 2021-07-05
Publication date: 2022-01-13
Also published as: CN111658128B; CN111658128A

Abstract

A high-frequency tool having multiple functions, comprising a head end assembly (10) and a handle assembly (30), wherein the rear end of an outer sheath tube (21) on the head end assembly (10) is connected to a first handle (35), a spring tube penetrates the outer sheath tube (21), an injection tube (23) penetrates the spring tube (22), and the injection tube (23) is fixedly connected to a second handle. The second handle moves back and forth and drives the injection tube (23) to move back and forth. A conductive seat (14) penetrates the front portion of the outer sheath tube (21), the front end of the spring tube (22) is fixedly connected to the conductive seat (14), and the rear end of the spring tube (22) is connected to a connector (34) on an electrode seat. An O-blade (11) also penetrates the front portion of the outer sheath tube (21), and the O-blade (11) has an inner cavity and is in communication with the injection tube (23). The injection tube (23) moves back and forth and drives the O-blade (11) to extend out or retract from the front end of the outer sheath tube (21). The high-frequency tool integrates four functions therein, i.e. cutting, marking, electrocoagulation and liquid spraying, such that a doctor can perform a corresponding operation according to needs, thereby saving on the time for replacing instruments and improving the surgical efficiency.

Description

A multifunctional high frequency tool

technical field

The present invention relates to the technical field of medical instruments, and more particularly, to a multifunctional high-frequency cutter.

Background technique

With the extensive development of endoscopic therapy, traditional surgical operations in some fields are increasingly being replaced by endoscopic surgery. Endoscopic surgery has obvious advantages such as less trauma and fewer complications, such as endoscopic tissue biopsy. , Endoscopic mucosal resection mucosal resection, EMR), endoscopic submucosal dissection (Endoscopic submucosal) Dissection, ESD) and other common surgical procedures have also passed the test of time and have been widely used. As an essential surgical instrument, high-frequency electrocautery is used to strip the mucosa and achieve en bloc resection of the diseased tissue.

The high-frequency electrosurgical knives on the market usually do not have a water injection function, and the mucus secreted by the patient's digestive tract and the blood stains generated during the operation often block the doctor's field of vision, making it difficult to clearly observe the diseased tissue and accurately cut the knife. Nowadays, more and more endoscopes have their own water and gas valves, which can be used to clean mucus and blood stains, but they are mainly used to clean the soft endoscope lens and light source. Due to insufficient water pressure and too little water, it cannot be used for patient digestion. Clean properly. At present, the main purpose of cleaning the digestive tract is to inject physiological saline into the endoscopic forceps, which results in the phenomenon of repeated instrument replacement during the operation, which greatly increases the operation time and brings pain to the patients.

At present, the commonly used instruments on the market are mainly single-function electric cutting instruments, and very few manufacturers provide instruments with integrated functions of cutting and liquid spraying. The Chinese patent with the application publication number CN109394335A discloses a high-frequency composite electric knife, which is a two-in-one device for cutting and liquid spraying. It uses a sliding handle to conduct electricity through a steel wire and drive the push-pull knife bar to achieve cutting and marking. Or the shank will always be exposed, posing a risk to the operation.

The Chinese patent with the authorized publication number CN209107567U discloses a multifunctional high-frequency electric cutting knife, which is a three-in-one instrument of electrocoagulation, injection and cutting, wherein the electrocoagulation function adopts a pliers cup clamping structure, which is cumbersome to operate. The structure is more complicated and the manufacturing cost is high.

technical problem

In view of the deficiencies in the prior art, the present invention provides a multifunctional high-frequency cutter, which integrates the functions of cutting, marking and spraying liquid to achieve three-in-one, and the doctor can perform corresponding operations as needed, In this way, the time for replacing instruments is saved, and the operation efficiency is improved.

technical solutions

In order to achieve the above purpose, the present invention provides the following technical solutions: a multifunctional high-frequency cutter, comprising a head end assembly and a handle assembly, the head end assembly including an outer sheath tube and an O knife; the handle assembly includes a first a handle, a second handle, an electrode holder and an injection interface;

The first handle is slidably connected with the second handle; at the same time, the rear end of the outer sheath is connected with the first handle, and the outer sheath is provided with a spring tube, the spring tube is provided with an injection tube, and the injection tube is connected with the second handle Fixed connection, and the injection tube is communicated with the injection interface on the handle assembly; the second handle slides back and forth and drives the injection tube to move back and forth;

The front part of the outer sheath is provided with a conductive seat and the O knife, the front end of the spring tube is fixedly connected with the conductive seat, and the rear end of the spring tube is connected with the connector on the electrode seat; A conductive moving block is also fixed on the knife, and the O knife is connected to the conductive seat through the conductive moving block;

The rear end of the O-knife is fixedly connected with the injection tube, and the O-knife has an inner cavity and is communicated with the injection pipe; the injection pipe moves back and forth and drives the O-knife to extend and retract from the front end of the outer sheath.

Preferably, the rear end of the outer sheath is slidably connected with the first handle.

Preferably, the O-knife penetrates through the conductive seat.

Preferably, an outer sheath moving block is fixed at the rear end of the outer sheath tube, and the rear end of the outer sheath moving block is slidably connected with the first handle insert sleeve.

Preferably, the outer sheath tube is fixedly connected to the outer sheath moving block through an outer sheath joint, the outer peripheral wall of the outer sheath joint is formed into a tooth shape, and the outer sheath tube is sleeved on the outer peripheral wall of the outer sheath joint.

Preferably, the first handle includes a handle body and a thumb ring fixed at the rear end of the handle body; the second handle is a two-finger handle.

Preferably, a ceramic head is also fixed at the front end of the O-knife.

Preferably, the front end of the O-knife extends along the radial direction of the O-knife to form a radial cutter body, the front part of the O-knife is also fixed with a fixed piece, and the ceramic head is clamped between the radial cutter body and the fixed piece between.

Preferably, the injection interface is fixed on the second handle.

Preferably, the electrode holder and the first handle are connected by snap connection, interference fit or screw connection.

beneficial effect

To sum up, the present invention has the following beneficial effects:

1. The high-frequency tool integrates the functions of cutting, marking, electrocoagulation and liquid spray to achieve four-in-one. Doctors can perform corresponding operations as needed to mark the diseased tissue; Cleaning; it can also cut and peel the mucosal tissue; this saves the time for changing instruments, improves the efficiency of the operation, and minimizes the pain of the patient;

2. Between the functions of electrocoagulation and cutting, through the reverse movement of the corresponding driving element, firstly, the accidental activation of the standby function can be completely eliminated, so as to avoid accidental injury to the patient or interference to the surgical process;

3. The internal structure of the high-frequency tool is simpler and the manufacturing cost is low.

Description of drawings

Fig. 1 is the structural representation of this high frequency cutter;

Fig. 2 is the structural representation that this high frequency cutter is in cutting function;

Fig. 3 is the sectional view of Fig. 2;

Figure 4 is a cross-sectional view of the head-end assembly;

5 is a cross-sectional view of the assembly of the outer sheath tube and the outer sheath moving block;

6 is a cross-sectional view of the handle assembly;

7 is a schematic structural diagram of the high-frequency cutter in the function of spraying liquid or marking;

Fig. 8 is the sectional view of the head end assembly when the high-frequency cutter is in the function of spraying liquid or marking;

Fig. 9 is the structural representation that this high frequency cutter is in the electric coagulation function;

FIG. 10 is a cross-sectional view of the head-end assembly when the high-frequency cutter is in the electrocoagulation function.

Reference numerals: 10, head assembly; 11, O knife; 12, ceramic head; 13, fixed piece; 14, conductive seat; 15, conductive moving block; 16, injection interface; 21, outer sheath; 22, spring tube; 23, injection tube; 24, outer sheath connector; 25, injection catheter; 30, handle assembly; 31, outer sheath moving block; 34, connector; 35, first handle; 36, two-finger handle; 37, thumb ring.

Embodiments of the present invention

The present invention will be further described with reference to the accompanying drawings.

This embodiment discloses a multifunctional high-frequency knife, as shown in FIGS. 1 to 5 , including a head assembly 10 and a handle assembly 30 . The head assembly 10 includes an outer sheath 21 and an O knife 11 ; the handle assembly 30 It includes a first handle 35, a second handle, an electrode seat and an injection interface 16. The electrode seat is provided with a connector 34, and the electrode seat and the first handle 35 are connected by snap connection, interference fit or screw connection; the first handle 35 It is slidably connected with the second handle; at the same time, the rear end of the outer sheath tube 21 is connected with the second handle, and the outer sheath tube 21 is pierced with a spring tube 22, and the spring tube 22 is pierced with an injection tube 23, and the injection tube 23 and The second handle is fixedly connected, and the injection tube 23 is communicated with the injection interface 16 on the second handle through the injection catheter 25; the second handle moves back and forth and drives the injection tube 23 to move back and forth; the front part of the outer sheath 21 is pierced with a conductive The seat 14 and the O knife, the O knife 11 penetrates the conductive seat 14, the front end of the spring tube 22 is fixedly connected with the conductive seat 14, the rear end of the spring tube 22 is connected with the connector 34 on the electrode seat, and at the same time, the O knife 11 is also fixed There is a conductive moving block 15, and the O knife 11 is connected to the conductive seat 14 through the conductive moving block 15; the rear end of the O knife 11 is fixedly connected to the injection tube 23, and the O knife 11 has an inner cavity and is communicated with the injection tube 23; the injection tube 23 moves back and forth and drives the O knife 11 to extend and retract from the front end of the outer sheath 21 .

Liquid spraying function: As shown in Figures 7 and 8, the rear end of the O knife 11 is fixedly connected with the injection tube 23, and the O knife 11 has an inner cavity and is communicated with the injection tube 23, and the rear end of the injection tube 23 is connected with the injection interface 16 are connected, at this time, the injection port 16, the injection tube 23 and the inner cavity of the O knife 11 are connected to form a liquid channel, the syringe is fixed at the injection port 16, and the liquid can be sprayed from the front end of the O knife 11;

Cutting function: as shown in Figure 2, Figure 3 and Figure 4, push the outer sheath 21 to move forward, so that the outer sheath 21 wraps the conductive seat 14; push the second handle forward along the first handle 35, the second The handle moves forward and drives the injection tube 23 and the O knife 11 to move forward, so that the O knife 11 protrudes from the front end of the outer sheath tube 21. At this time, the connector 34, the spring tube 22, the conductive seat 14, the conductive moving block and the The O knife 11 forms a connected circuit, and the high frequency is electrically connected to the connector 34 to perform the O knife 11 cutting operation;

Marking function: as shown in Figures 7 and 8, push the outer sheath 21 to move forward, so that the outer sheath 21 wraps the conductive seat 14; pull the second handle backward along the first handle 35, and the second handle is backward Move and drive the injection tube 23 and the O-knife 11 to move backward, so that the O-knife 11 is retracted into the conductive seat 14 and only the O-knife 11 head is exposed. At this time, the connector 34, the spring tube 22, the conductive seat 14, the conductive moving block And the O-blade 11 forms a connected circuit to electrically connect the high frequency to the connector 34 to perform the O-blade 11 marking operation.

Doctors can perform corresponding operations according to their needs, that is, they can mark the diseased tissue; they can also spray physiological saline to clean the human tissue; they can also cut and peel off the mucosal tissue; this saves the time for replacing instruments, improves the operation efficiency, and maximizes the efficiency of the operation. reduce the suffering of the patient.

In the initial state, that is, the outer sheath tube 21 wraps the conductive base 14, and at the same time, the O-knife 11 is retracted into the conductive base 14 and only the head of the O-knife 11 is exposed. And the marking function reduces the operation steps of the doctor and improves the operation efficiency. When the electric cutting function is performed, it is only necessary to push the second handle to move forward along the first handle, so that the O knife 11 protrudes from the front end of the outer sheath tube 21 At the same time, the high frequency is electrically connected to the connector 34, and the O-knife 11 cutting operation can be performed. The operation is relatively simple and convenient, and misoperation is not easy to occur.

In order to further improve the practicability of the high-frequency cutter, the rear end of the outer sheath tube 21 is slidably connected with the first handle, and the outer sheath tube 21 moves backward to expose the conductive seat 14. In this way, optimization is carried out on the basis of the above technical solution, and the electrocoagulation function is added; electrocoagulation function: as shown in Figures 9 and 10, pull the outer sheath 21 to move backwards, so that the conductive seat 14 is exposed; The handle is pulled backward along the first handle, and the second handle moves backward and drives the injection tube 23 and the O-knife 11 to move backward, so that the O-knife 11 is retracted into the conductive seat 14 and only the O-knife 11 head is exposed. At this time, connect the The device 34, the spring tube 22, the conductive seat 14 and the conductive moving block form a connected circuit to perform the electrocoagulation function. Between the electric coagulation and electric cutting functions, through the reverse movement of the corresponding driving member, the accidental activation of the standby function can be completely eliminated first, thereby avoiding accidental injury to the patient or interference to the surgical process.

Further, as shown in FIG. 5 and FIG. 6 , the rear end of the outer sheath tube 21 is fixed with an outer sheath moving block 31 , and the rear end of the outer sheath moving block 31 is slidably connected with the first handle 35 . The outer sheath tube 21 is fixedly connected to the outer sheath moving block 31 through the outer sheath joint 24 , the outer peripheral wall of the outer sheath joint 24 is formed into a tooth shape, and the outer sheath tube 21 is sleeved on the outer peripheral wall of the outer sheath joint 24 . In this way, the assembly of the outer sheath tube 21 and the first handle is facilitated. Preferably, the outer sheath moving block 31 is moved backward to abut against the first handle and expose the conductive seat 14 . In this way, the outer sheath moving block 31 moves backwards to abut against the first handle and restricts the further backward movement of the outer sheath tube 21 , so that the conductive seat 14 is completely exposed at the front end of the outer sheath tube 21 .

The first handle 35 includes a handle body and a thumb ring fixed at the rear end of the handle body; the second handle is a two-finger handle 36 . It is convenient for doctors to operate with one hand.

In addition, as shown in FIG. 4 , the front end of the O knife 11 is also fixed with a ceramic head 12 ; the front end of the O knife 11 extends along the radial direction of the O knife 11 to form a radial knife body, and the front part of the O knife 11 is also A fixed piece 13 is fixed, and the ceramic head 12 is clamped between the radial cutter body and the fixed piece 13 .

The specified directions in this specific embodiment are only for the convenience of expressing the positional relationship and the mutual cooperation relationship between the various components. The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

A multifunctional high-frequency tool, comprising a head assembly (10) and a handle assembly (30), the head assembly (10) comprising an outer sheath (21) and an O knife (11); the handle assembly (30) comprises a first handle (35), a second handle, an electrode holder and an injection interface (16); it is characterized by:

The first handle (35) is slidably connected with the second handle; at the same time, the rear end of the outer sheath (21) is connected with the first handle (35), and the outer sheath (21) is provided with a spring tube (22), The spring tube (22) is provided with an injection tube (23), the injection tube (23) is fixedly connected with the second handle, and the injection tube (23) is communicated with the injection interface (16) on the handle assembly (30). ; The second handle slides back and forth and drives the injection tube (23) to move back and forth;

The front part of the outer sheath tube (21) is provided with a conductive seat (14) and the O knife (11), the front end of the spring tube (22) is fixedly connected with the conductive seat (14), and the spring tube (22) ) is connected to the connector (34) on the electrode holder; at the same time, a conductive moving block (15) is also fixed on the O knife (11), and the O knife (11) passes through the conductive moving block (15) connected with the conductive seat (14);

The rear end of the O knife (11) is fixedly connected with the injection pipe (23), and the O knife (11) has an inner cavity and is communicated with the injection pipe (23); the injection pipe (23) moves back and forth and drives the O knife (23). The knife (11) is extended and retracted from the front end of the outer sheath (21).
The multifunctional high-frequency cutter according to claim 1, wherein the rear end of the outer sheath tube (21) is slidably connected to the first handle (35).
The multifunctional high-frequency cutter according to claim 1, wherein the O cutter (11) penetrates the conductive seat (14).
The multifunctional high-frequency tool according to claim 3, characterized in that: an outer sheath moving block (31) is fixed at the rear end of the outer sheath tube (21), and the outer sheath moving block (31) is The rear end is slidably connected with the first handle (35).
The multifunctional high-frequency tool according to claim 4, wherein the outer sheath tube (21) is fixedly connected to the outer sheath moving block (31) through an outer sheath joint (24), and the outer sheath joint The outer peripheral wall of (24) is formed into a tooth shape, and the outer sheath tube (21) is sleeved on the outer peripheral wall of the outer sheath joint (24).
The multifunctional high-frequency tool according to claim 1, wherein the first handle (35) comprises a handle body and a thumb ring (37) fixed at the rear end of the handle body; the second handle is a two-finger handle (36).
The multifunctional high-frequency cutter according to claim 1, characterized in that: a ceramic head (12) is also fixed at the front end of the O cutter (11).
The multifunctional high-frequency cutter according to claim 7, wherein the front end of the O cutter (11) extends along the radial direction of the O cutter (11) to form a radial cutter body, and the O cutter (11) The front part of the ) is also fixed with a fixed piece (13), and the ceramic head (12) is clamped between the radial cutter body and the fixed piece (13).
The multifunctional high-frequency cutter according to claim 1, wherein the injection interface (16) is fixed on the second handle.
The multifunctional high-frequency tool according to claim 1, wherein the electrode holder and the first handle (35) are connected by snap connection, interference fit or screw connection.